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BONDS PAYABLE - Narrative (Details) $ in Thousands, ¥ in Millions |  |  |  |  |  |  |  | 12 Months Ended |  |  |
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Jan. 31, 2027 USD ($) | Jan. 31, 2027 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 CNY (¥) | Nov. 10, 2022 USD ($) | Nov. 10, 2022 CNY (¥) | Jul. 23, 2021 shares | Jan. 04, 2021 USD ($) | Dec. 29, 2018 USD ($) | Dec. 29, 2018 CNY (¥) | Nov. 02, 2018 USD ($) | Nov. 02, 2018 CNY (¥) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2022 CNY (¥) | Jun. 30, 2022 | Dec. 31, 2020 CNY (¥)
Bonds Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bond loan |  |  |  |  |  |  |  |  | $ 87,776 | ¥ 600.0 |  |  |  |  |  |  |  |
Equity holding pledged percentage |  |  |  |  |  |  |  |  | 12.39% | 12.39% |  |  |  |  |  |  |  |
Subscribed amount (in dollars and yuan renminbi) |  |  | $ 43,888 |  |  |  |  |  |  |  |  |  | $ 43,888 |  |  | ¥ 300.0 |  |
Debt instrument, convertible amount, subsidiary value threshold |  |  |  |  |  |  |  |  |  |  |  |  | $ 950,000 |  |  |  |  |
Repayments of convertible debt (in dollars and yuan renminbi) |  |  | $ 14,630 | ¥ 100.0 | $ 14,629 | ¥ 100.0 |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  |  | 12.00% |  |  |  |  |  |  |  |  |  | 12.00% |  |  | 12.00% |  |
Long term bonds payable |  |  | $ 43,888 |  |  |  |  |  |  |  |  |  | $ 43,888 | $ 73,147 |  |  |  |
Aggregate amount of bond loan |  |  |  |  |  |  |  |  |  |  | $ 73,147 | ¥ 500.0 |  |  |  |  |  |
Subscribed by bond holders |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 29,915 |  |  | ¥ 204.5
Shares of common stock (in shares) | shares |  |  |  |  |  |  | 6,719,845 |  |  |  |  |  |  |  |  |  |  |
Purchase agreement to issue convertible promissory note amount |  |  |  |  |  |  |  | $ 57,500 |  |  |  |  |  |  |  |  |  |
Interest rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6.00% |
Loss on changes In fair value of convertible notes |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | $ 9,861 | $ 0 |  |  |
Convertible promissory notes converted common stock shares (in shares) | shares |  |  |  |  |  |  | 6,736,106 |  |  |  |  |  |  |  |  |  |  |
CL Investors |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bonds Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Aggregate amount of bond loan |  |  |  |  |  |  |  |  |  |  | $ 58,516 | ¥ 400.0 |  |  |  |  |  |
Forecast |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Bonds Payable [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Repayments of convertible debt (in dollars and yuan renminbi) | $ 43,888 | ¥ 300.0 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

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