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TAXATION (Reconciliation of Accrued Unrecognized Tax Positions) (Details) ¥ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020 CNY (¥)	Dec. 31, 2020 USD ($)	Dec. 31, 2019 CNY (¥)
TAXATION
Balance at the beginning of year	¥ 98,984	$ 15,170	¥ 81,000
Changes based on tax positions related to the current year	(6,446)	(988)	21,238
Additions related to prior year tax position	2,171	333	548
Reversal related to prior year tax position	(20,304)	(3,112)	(2,810)
Decrease relating to expiration of applicable statute of limitation	(7,213)	(1,105)	(1,386)
Foreign currency translation	(2,099)	(322)	394
Balance at the end of year	¥ 65,093	$ 9,976	¥ 98,984

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- 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.

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Amount of unrecognized tax benefits.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 45
-Paragraph 10B
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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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