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CASH, CASH EQUIVALENTS AND RESTRICTED CASH (Tables) | 12 Months Ended
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Dec. 31, 2023
CASH, CASH EQUIVALENTS AND RESTRICTED CASH |
Schedule of reconciliation of cash, cash equivalents, and restricted cash | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Years ended December 31,
​ |  | 2022 |  | 2023
Cash and cash equivalents | ​ | $ | 3,308 | ​ | $ | 4,834
Restricted cash (Note i) | ​ |  | 4,362 | ​ |  | 5,221
Total cash, cash equivalents, and restricted cash shown in the consolidated statements of cash flows | ​ | $ | 7,670 | ​ | $ | 10,055
​ (Note i) Restricted cash required by department of education and the deposits necessary to secure lines of credit from financial institutions.

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- Definition Tabular disclosure of the components of cash, cash equivalents, and investments. + References No definition available. + Details
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