Leases Operating Lease Assets and Liabilities (Details) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019 USD ($) Rate	Jun. 30, 2019 USD ($) Rate
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 47,639	$ 47,639
Operating Lease, Liability	51,663	51,663
Operating Lease, Cost	$ 1,347	$ 2,684
Operating Lease, Weighted Average Remaining Lease Term	16 years 1 month 6 days	16 years 1 month 6 days
Operating Lease, Weighted Average Discount Rate, Percent | Rate	3.48%	3.48%
Operating Leases, Rent Expense		$ 1,136