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Cash, Cash Equivalents, and Term Deposit (Tables) | 3 Months Ended
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Mar. 31, 2022
Cash and Cash Equivalents [Abstract] |
Cash and Cash Equivalents by Geographic Region | Cash and cash equivalents were held in the following geographic regions:
(In thousands) | March 31, 2022 |  | December 31, 2021
North America | $ | 4,869 |  |  | $ | 6,430 |
People's Republic of China ("PRC") | 17,657 |  | 16,000
Asia (excluding the PRC) | 10,361 |  | 11,798
Europe | 18,021 |  | 17,604
South America | 2,720 |  | 8,981
Total cash and cash equivalents | $ | 53,628 |  |  | $ | 60,813 |

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- Definition Tabular disclosure of the components of cash and cash equivalents. + References No definition available. + Details
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