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GOODWILL (Narrative) (Details) ¥ in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 CNY (¥) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 CNY (¥) | Dec. 31, 2019 CNY (¥) | Dec. 31, 2018 CNY (¥) | Dec. 31, 2021 USD ($) | Jan. 31, 2021 CNY (¥) | Jan. 31, 2021 USD ($) | Dec. 31, 2020 USD ($)
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |
Goodwill, Acquired during period | ¥ 368,221 | $ 57,782 | ¥ 3,213 | ¥ 45,272 | ¥ 165,171 |  |  |  |
Goodwill | 581,877 |  | 213,656 | 210,443 | ¥ 165,171 | $ 91,309 | ¥ 368,221 | $ 57,782 | $ 33,527
Goodwill impairment charges | 0 | $ 0 | ¥ 0 | ¥ 0 |  |  |  |  |
GFMH, CMCC, SJYH, BPMC |  |  |  |  |  |  |  |  |
Business Acquisition, Contingent Consideration [Line Items] |  |  |  |  |  |  |  |  |
Goodwill | ¥ 581,877 |  |  |  |  | $ 91,309 |  |  |

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