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Note 11 - Employee Defined Contribution Plan	12 Months Ended
	Dec. 31, 2021
Notes to Financial Statements
Compensation and Employee Benefit Plans [Text Block]	11. Employee defined contribution plan Full time employees of the Company in the PRC participate in a government mandated defined contribution plan, pursuant to which certain pension benefits, medical care, employee housing funds and other welfare benefits are provided to employees. Chinese labor regulations require that the Company’s PRC subsidiaries make contributions to the government for these benefits based on certain percentages of the employees’ salaries. The Company has no legal obligation for the benefits beyond the contributions made. The total amounts for such employee benefits, which were expensed as incurred, were $82, $130 and $303 for the years ended December 31, 2019, 2020 and 2021, respectively.

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- Definition

The entire disclosure for an entity's employee compensation and benefit plans, including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, share-based compensation, life insurance, severance, health care, unemployment and other benefit plans.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
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