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INCOME TAXES - Summary of effect of tax holiday (Detail) - CNY (¥) ¥ / shares in Units, ¥ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Tax saving amount due to HNTE status		¥ 106,516	¥ 90,819
Tax saving amount due to Software enterprise	¥ 7,527
Tax expense amount due to other jurisdiction	¥ (17,405)	¥ (411)
Income (loss) per share effect-basic and diluted	¥ (0.05)	¥ 0.50	¥ 0.45

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- Definition

Income tax holiday income tax expense (benefits) per share.

+ References

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- Definition

Income tax holiday tax expense amount.

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- Definition

Income tax holiday tax saving amount software enterprises.

+ References

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- Definition

The amount of income taxes from which a reporting entity is exempt or for which it will receive a reduction in income taxes as a result of the income tax holiday granted by the taxing jurisdiction.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 11.C)
-URI http://asc.fasb.org/extlink&oid=116825942&loc=d3e330215-122817

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