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LEASES - Weighted Average (Details)
Dec. 31, 2020
Dec. 31, 2019
LEASES    
Weighted average remaining lease term of operating leases 13 years 4 months 24 days 13 years 1 month 6 days
Weighted average remaining lease term of finance leases 3 years 10 months 24 days 1 year 7 months 6 days
Weighted average discount rate of operating leases (as a percent) 6.00% 6.00%
Weighted average discount rate of finance leases (as a percent) 8.00% 6.00%