Leases Operating Lease Assets and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Dec. 31, 2020
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 39,636		$ 39,636		$ 42,617
Operating Lease, Liability	$ 43,854		43,854		$ 46,819
Operating Lease, Cost			$ 1,193	$ 1,325
Operating Lease, Weighted Average Remaining Lease Term	14 years 8 months 8 days		14 years 8 months 8 days		14 years 11 months 15 days
Operating Lease, Weighted Average Discount Rate, Percent	3.41%		3.41%		3.41%
Operating Leases, Rent Expense	$ 1,200	$ 1,368	$ 2,401	$ 2,736