Leases Lease Cost (Details) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019 USD ($)	Sep. 30, 2019 USD ($)
Leases [Abstract]
Finance Lease, Right-of-Use Asset, Amortization	$ 162	$ 485
Finance Lease, Interest Expense	36	115
Operating Lease, Cost	2,142	6,642
Variable Lease, Cost	502	1,570
Finance Lease, Principal Payments	146	385
Operating Lease, Payments	891	2,514
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	$ 0	$ 3,232
Operating Lease, Weighted Average Remaining Lease Term	4 years 3 months	4 years 3 months
Finance Lease, Weighted Average Remaining Lease Term	41 years 8 months 12 days	41 years 8 months 12 days
Finance Lease, Weighted Average Discount Rate, Percent	5.16%	5.16%
Operating Lease, Weighted Average Discount Rate, Percent	5.16%	5.16%