Leases Leases Cash Flow (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2019 USD ($)
Leases Cash Flow [Abstract]
Operating Lease, Payments	$ 3,093
Finance Lease, Interest Payment on Liability	1,948
Finance Lease, Principal Payments	10,657
Total Lease Payments	15,698
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	19,166
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 4,240