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TAXATION - Reconciliation of the beginning and ending amount of unrecognized tax benefits excluding the penalty and interest (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 CNY (¥)
TAXATION
Balance at the beginning of year	¥ 67,172	$ 9,461	¥ 81,901
Changes based on tax positions related to the current year	0	0	322
Additions related to prior year tax position	12,084	1,702	1,072
Decreases related to prior year tax position	(14,104)	(1,987)	(6,617)
Decrease related to disposal of CMSI	(7,861)	(1,107)	(7,861)
Decreases relating to expiration of applicable statute of limitation	(1,997)	(281)	(3,572)
Foreign currency translation	8,605	1,212	1,927
Balance at the end of year	¥ 63,899	$ 9,000	¥ 67,172

X

- Definition

Amount of increase 9decrease) in unrecognized tax benefits resulting from tax positions that have been or will be taken in current period tax return.

+ References

No definition available.

+ Details

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X

- Definition

Amount of decrease in unrecognized tax benefits resulting from disposal of group.

+ References

No definition available.

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- Definition

Amount of increase (decrease) in unrecognized tax benefits resulting from foreign currency translation.

+ References

No definition available.

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X

- Definition

Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10B
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482525/740-10-45-10B

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X

- Definition

Amount of decrease in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

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X

- Definition

Amount of increase in unrecognized tax benefits resulting from tax positions taken in prior period tax returns.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

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X

- Definition

Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 15A
-Subparagraph (a)(4)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482685/740-10-50-15A

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