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Note O - Income Taxes - Reconciliation of the U.S. Federal Income Tax Rate (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Expected taxes at statutory rate $ (11,768) $ (13,943) $ (11,374)
PPP loan forgiveness 0 0 (1,308)
Non-deductible/non-taxable items 57 33 897
Global intangible low-taxed incom 2,568    
Foreign rate differences 242 552 107
Foreign permanent differences (1,212) (1,407) (1,320)
Changes in valuation allowance 8,755 14,196 13,822
Share-based compensation 729 879 468
Research and development credits (492) (626) (872)
Extinguishment of debt 1,580 0 0
Foreign other 0 0 0
Other, net (450) 317 (418)
Income tax (benefit) expense $ 9 $ 1 $ 2