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Acquired Intangible Assets, Net | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
ACQUIRED INTANGIBLE ASSETS, NET | 9. ACQUIRED INTANGIBLE ASSETS, NET
|  | December 31, 2020 |  | December 31, 2021
Cost of acquired intangible assets |  | $ | 4,051 |  |  | $ | 4,104 |
Less: accumulated amortization |  |  | (1,772 | ) |  |  | (2,222 | )
Acquired intangible assets, net |  | $ | 2,279 |  |  | $ | 1,882 |
The Group recorded amortization expense of $409, $392 and $413 for the years ended December 31, 2019, 2020 and 2021, respectively. No impairment losses were recognized for the years ended December 31, 2019, 2020 and 2021. The annual amortization expense for each of the five succeeding fiscal years and thereafter are as follows:
2022 |  | $ | 244
2023 |  |  | 243
2024 |  |  | 237
2025 |  |  | 233
2026 |  |  | 231
Thereafter |  |  | 694
Total |  | $ | 1,882

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -URI https://asc.fasb.org/subtopic&trid=2144471 + Details
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