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Acquired Intangible Assets, Net | 12 Months Ended
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Dec. 31, 2020
Goodwill and Intangible Assets Disclosure [Abstract] |
ACQUIRED INTANGIBLE ASSETS, NET | 8. ACQUIRED INTANGIBLE ASSETS, NET Intangible assets consisted of the following:
|  | 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 |
The Group recorded amortization expense of $250, $409 and $392 for the years ended December 31, 2018, 2019 and 2020, respectively. No impairment losses were recognized for the years ended December 31, 2018, 2019 and 2020. The annual amortization expense for each of the five succeeding fiscal years and thereafter are as follows:
2021 |  | $ | 394
2022 |  |  | 233
2023 |  |  | 233
2024 |  |  | 233
2025 |  |  | 233
Thereafter |  |  | 953
Total |  | $ | 2,279

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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