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Commitments and Contingencies Weighted Average Lease Terms (Details)
Dec. 31, 2020
Rate
Dec. 31, 2019
Rate
Weighted Average Lease Terms [Abstract]    
Operating Lease, Weighted Average Discount Rate, Percent 5 years 7 months  
Finance Lease, Weighted Average Discount Rate, Percent 3.27% 3.27%
Finance Lease, Weighted Average Remaining Lease Term 1 year 11 months