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Cash and Cash Equivalents (Tables) | 12 Months Ended
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Dec. 31, 2020
Cash and Cash Equivalents [Abstract] |
Cash and Cash Equivalents by Geographic Region | Cash and cash equivalents were held in the following geographic regions:
| December 31,
(In thousands) | 2020 |  | 2019
North America | $ | 9,812 |  |  | $ | 16,751 |
People's Republic of China ("PRC") | 14,244 |  |  | 13,700 |
Asia (excluding the PRC) | 13,518 |  |  | 21,691 |
Europe | 10,926 |  |  | 9,081 |
South America | 8,653 |  |  | 13,079 |
Total cash and cash equivalents | $ | 57,153 |  |  | $ | 74,302 |

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