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OTHER NON-CURRENT ASSETS, NET (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2023
OTHER NON-CURRENT ASSETS, NET |
Schedule of other non-current assets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ | As of December 31,
​ |  | 2022 |  | 2023
​ | ​ | ​ | ​ | ​ | ​ | ​
Long-term restricted cash (Note i) | ​ | $ | 1,731 | ​ | $ | 1,714
Long-term receivable (Note ii) |  | ​ | — |  | ​ | 1,467
Long-term lease deposits | ​ | ​ | 195 | ​ | ​ | 194
Others |  | ​ | 44 |  | ​ | 23
Sub-total | ​ | $ | 1,970 | ​ | $ | 3,398
Less: allowance for credit losses (Note ii) | ​ | ​ | — | ​ | ​ | (769)
Total |  | $ | 1,970 |  | $ | 2,629
​ (Note i) It includes cash in collateral bank accounts for the issuance of letters of credit in U.S. (Note ii) Long-term receivable related to BSC and expected to be collected more than twelve months.

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- Definition Tabular disclosure of noncurrent assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(17)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480566/210-10-S99-1 + Details
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