XML 82 R55.htm IDEA: XBRL DOCUMENT v3.24.1.u1
Note 7 - Income Taxes - Reconciliation of Income Tax Expenses (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Loss before income tax $ 21,842 $ 36,117 $ 64,638
Expected income tax benefit 4,566 7,585 13,574
Tax rate difference (1,800) (2,253) (3,796)
Non-deductible expenses 20 812 (788)
Research tax credits 359 1,437 1,096
Non-taxable income 0 0 21
Tax preference (336) (667) 3,755
Others 389 (216) (262)
Current and deferred tax rate differences 383 672 0
Stock Compensation Expense - Windfall (807) 0 0
R&D super deduction 409 389 0
Interest expenses (523) (315) 0
Change in valuation allowance (2,766) (7,607) (17,170)
Total income tax (expenses) $ (106) $ (163) $ (3,570)