Leases Leases Cash Flow (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2019
Leases [Abstract]
Finance Lease, Right-of-Use Asset, Amortization	$ 3,074	$ 6,268
Lease, Cost	15,295	31,656
Leases Cash Flow [Abstract]
Operating Lease, Payments	3,124	6,217
Finance Lease, Interest Payment on Liability	1,773	3,721
Finance Lease, Principal Payments	11,163	21,820
Total Lease Payments	16,060	31,758
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	15,308	34,474
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	$ 2,125	$ 6,365