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Note 2 - Summary of Significant Accounting Policies - Property and Equipment by Geographical Location (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property and Equipment	$ 1,422	$ 184
CHINA
Property and Equipment	98	45
UNITED STATES
Property and Equipment	$ 1,324	$ 139

X

- Definition

Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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