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The components of loss before income taxes are summarized below: (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Loss before income taxes |  |
U.S. operations | $ (2,183) | $ (2,981)
Loss before income taxes | $ (2,183) | $ (2,981)

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