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Leases (Lease Term and Discount Rate) (Details)
Dec. 31, 2019
Leases [Abstract]  
Weighted-average remaining lease term (years): Operating leases 2 years 10 months 24 days
Weighted-average remaining lease term (years): Finance leases 1 year 7 months 6 days
Weighted-average discount rate: Operating leases 5.90%
Weighted-average discount rate: Finance leases 5.50%