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TAXATION - Uncertain Tax Positions (Details) - CNY (¥) ¥ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Reconciliation of the beginning and ending amount of liabilities associated with uncertain tax positions |  |  |
Unrecognized tax benefits, beginning of year | ¥ 32,152 | ¥ 26,246 | ¥ 24,619
The amount of decreases in the unrecognized tax benefits relating to settlements with taxing authorities | (69) | (242) | (259)
Additions for tax position of current year | 3,231 | 6,148 | 2,301
Decrease due to disposal of subsidiaries (Note 25) | (551) |  |
Decrease due to deregistration of subsidiary |  |  | (415)
Unrecognized tax benefits, end of year | ¥ 34,763 | ¥ 32,152 | ¥ 26,246

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- Definition Amount of decrease in unrecognized tax benefits resulting from disposal of interests in subsidiaries. + References No definition available. + Details
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- Definition 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 -URI http://asc.fasb.org/extlink&oid=120406818&loc=SL37586934-109318 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15A -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=84230637&loc=SL6600010-109319 + Details
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