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Leases - Weighted Average Remaining Lease Term and Discount Rate (Details)
Jun. 30, 2019
Weighted-Average Remaining Lease Term (years)  
Finance leases 3 years 10 months 28 days
Operating leases 10 years 1 month 18 days
Weighted-Average Discount Rate  
Finance leases 2.40%
Operating leases 8.20%