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Leases Operating Lease Assets and Liabilities (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Leases [Abstract]      
Operating Lease, Right-of-Use Asset $ 47,777   $ 48,642
Operating Lease, Liability 52,086   $ 52,894
Operating Lease, Cost $ 1,312 $ 1,119  
Operating Lease, Weighted Average Remaining Lease Term 15 years 1 month 9 days   16 years 3 months 10 days
Operating Lease, Weighted Average Discount Rate, Percent 3.42%   3.49%
Operating Leases, Rent Expense $ 1,368 $ 1,337