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LEASES - Additional Information (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2023 CNY (¥) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 CNY (¥) | Dec. 31, 2021 CNY (¥)
LEASES |  |  |  |
Operating lease costs | ¥ 53,172 | $ 7,489 | ¥ 72,244 | ¥ 52,648
Short-term lease costs | 46,220 | 6,510 | 15,493 | ¥ 11,317
Depreciation of finance lease assets | 22,361 | 3,149 | 9,204 |
Interest on finance lease liabilities | 15,563 | 2,192 | 5,491 |
Variable lease payments | 23,054 | 3,248 | 7,237 |
Total finance lease costs | ¥ 60,978 | $ 8,589 | ¥ 21,932 |
Weighted average remaining lease term for operating lease | 9 years 6 months | 9 years 6 months | 7 years 8 months 12 days | 8 years 3 months 18 days
Weighted average remaining lease term for finance lease | 7 years 9 months 18 days | 7 years 9 months 18 days | 9 years 3 months 18 days |
Weighted average discount rate for operating lease | 5.88% | 5.88% | 5.88% | 6.18%
Weighted average discount rate for finance lease | 5.84% | 5.84% | 5.90% |

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- Definition Amount of interest paid on finance lease liability. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (g)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 5 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479041/842-20-45-5 + Details
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- Definition Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 53 -Publisher FASB -URI https://asc.fasb.org//1943274/2147479589/842-20-55-53 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147478964/842-20-50-4 + Details
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