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Acquired Intangible Assets, Net (Tables) | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Intangible assets |
|  | December 31, 2019 |  | December 31, 2020
Cost of acquired intangible assets |  | $ | 3,968 |  |  | $ | 4,051 |
Less: accumulated amortization |  |  | (1,311 | ) |  |  | (1,772 | )
Acquired intangible assets, net |  | $ | 2,657 |  |  | $ | 2,279 |
Schedule of annual amortization expense |
2021 |  | $ | 394
2022 |  |  | 233
2023 |  |  | 233
2024 |  |  | 233
2025 |  |  | 233
Thereafter |  |  | 953
Total |  | $ | 2,279

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