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Other Income (Expense), Net (Tables) | 12 Months Ended
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Dec. 31, 2021
Other Income and Expenses [Abstract] |
Components of Other Income | The components of Other income (expense), net for the years ended December 31 were as follows (in thousands):
|  | 2021 |  |  | 2020 |  |  | 2019 |
Interest income |  | $ | 930 |  |  | $ | 95 |  |  | $ | 300 |
Rental income, net |  |  | 792 |  |  |  | 792 |  |  |  | 792 |
(Loss) gain on disposal of equipment |  |  | (72 | ) |  |  | 13 |  |  |  | 38 |
Foreign currency (losses) gains, net |  |  | (336 | ) |  |  | 181 |  |  |  | (108 | )
Other |  |  | (111 | ) |  |  | 12 |  |  |  | 44 |
|  | $ | 1,203 |  |  | $ | 1,093 |  |  | $ | 1,066 |

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