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Note 13 - Lease

12 Months Ended

Dec. 31, 2021

Notes to Financial Statements

Lessee, Operating Leases [Text Block]

13.

Lease

The Company has operating leases for offices in the U.S. and China with remaining lease terms of approximately 4.02 years and 0.30 years, respectively. Total expenses incurred under the operating leases for the years ended December 31, 2019, 2020 and 2021 were $816, $878, and $725, respectively. Total expenses incurred under short-term leases for the years ended December 31, 2019, 2020 and 2021 were nil, nil, and $20, respectively. The short-term lease commitment is $29 at December 31, 2021, which is expected to be paid within one year.

Maturities of operating lease liabilities as of December 31, 2021 are as follows:

			$

Year ending December 31, 2022			666
Year ending December 31, 2023			702
Year ending December 31, 2024			308
Year ending December 31, 2025			314
Year ending December 31, 2026			318
Total lease payments			2,308
Less: imputed interest			(302	)

Present value of lease liabilities			2,006

Other supplemental information related to leases is summarized below:

		Year ended December 31,
		2020				2021
			$				$

Operating cash flows used in operating lease			840				675

		As of December 31,
		2020				2021

Weighted average remaining lease term (years)			2.87				3.98
Weighted average discount rate			8.9	%			5.5	%