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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Prepaid land use rights (Details) - Prepaid land use rights, net	12 Months Ended
	Dec. 31, 2020
Minimum
Prepaid land use rights
Amortization based on remaining terms (in years)	26 years
Maximum
Prepaid land use rights
Amortization based on remaining terms (in years)	41 years

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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X

- Details

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X

- Details

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X

- Details

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