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Leases - Summary of Information Pertaining to Lease Term and Weighted-Average Discount Rate (Details)
Mar. 31, 2019
Weighted-average remaining lease term:  
Operating leases 7 years 10 months 24 days
Finance leases 7 years 7 months 6 days
Weighted-average discount rate:  
Operating leases 3.28%
Finance leases 4.12%