Leases Operating Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 41,073		$ 42,617
Operating Lease, Liability	45,284		$ 46,819
Operating Lease, Cost	$ 1,201	$ 1,312
Operating Lease, Weighted Average Remaining Lease Term	14 years 8 months 19 days		15 years 1 month 9 days
Operating Lease, Weighted Average Discount Rate, Percent	3.41%		3.42%
Operating Leases, Rent Expense	$ 1,208	$ 1,368