COMMITMENTS AND CONTINGENCIES - Weighted average term and discount rates (Details)	Dec. 31, 2021	Dec. 31, 2020
COMMITMENTS AND CONTINGENCIES
Operating Lease, Weighted-average term (years)	24 years 6 months 3 days	25 years 1 month 2 days
Operating Lease, Weighted-average discount rate	3.89%	3.86%
Finance Lease, Weighted-average term (years)	1 year 8 months 1 day	5 years 6 months 18 days
Finance Lease, Weighted-average discount rate	0.68%	0.88%

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Weighted average discount rate for finance lease calculated at point in time.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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- Definition

Weighted average remaining lease term for finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (g)(3)
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Weighted average discount rate for operating lease calculated at point in time.

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 55
-Paragraph 53
-URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971

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-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980

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