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LEASES - Weighted-average remaining lease term and weighted-average discount rate (Details)
Sep. 30, 2019
LEASES  
Weighted-average remaining lease term (years), Operating Leases 10 years 4 months 24 days
Weighted-average remaining lease term (years), Finance Leases 9 months 18 days
Weighted-average discount rate, Operating Leases 3.60%
Weighted-average discount rate, Finance Leases 3.20%