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SHARE-BASED COMPENSATION - Nonvested Restricted Shares - (Details) - Kaixin Auto 2019 Plan - USD ($) $ / shares in Units, $ in Thousands |  | 12 Months Ended
--- | --- | ---
May 03, 2019 | Dec. 31, 2020 | Dec. 31, 2019
Weighted average fair value per ordinary shares at the granted dates |  |  |
Weighted average period for unrecognized compensation cost |  | 1 year 2 months 26 days |
Restricted Stock |  |  |
Number of nonvested restricted shares |  |  |
Balance at the beginning of period |  | 1,446,111 |
Granted | 2,183,828 | 200,000 |
Vested |  | (474,889) |
Forfeited |  | (13,232) |
Balance at the end of period |  | 1,157,990 | 1,446,111
Weighted average fair value per ordinary shares at the granted dates |  |  |
Balance at the beginning of period |  | $ 3.36 |
Granted |  | 4.73 |
Forfeited |  | 3.94 |
Balance at the end of period |  | $ 3.36 | $ 3.36
Total unrecognized compensation cost |  | $ 199 |
Weighted average period for unrecognized compensation cost |  | 7 months 24 days |
Total fair value of shares vested |  | $ 1,870 | $ 3,231

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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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