Note 12 - Lease (Tables)

12 Months Ended

Dec. 31, 2020

Notes Tables

Operating Lease, Supplement Balance Sheet Information [Table Text Block]

	As of December 31,
		2019	2020
		$	$
Operating lease right-of-use assets		2,538	2,174
Current portion of operating lease liabilities		537	787
Operating lease liabilities		1,935	1,359
Total lease liabilities		2,472	2,146

Lessee, Operating Lease, Liability, Maturity [Table Text Block]

	$
Year ending December 31, 2021	972
Year ending December 31, 2022	792
Year ending December 31, 2023	708
Total lease payment	2,472
Less imputed interest	(326	)
Present value of lease liabilities	2,146

Lease, Cost [Table Text Block]

	Year ended December 31,
		2019	2020
		$	$
Operating cash flows used in operating lease		863	840

	As of December 31,
		2019		2020
Weighted average remaining lease term (years)		4.00		2.87
Weighted average discount rate		8.4	%	8.9	%