Leases Lease Balance Sheet Classification (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Leases Balance Sheet Classificiation [Abstract]
Operating Lease, Right-of-Use Asset	$ 61,432
Finance Lease, Right-of-Use Asset	187,088
Leases Right of Use Asset	248,520
Operating Lease, Liability, Current	8,584
Finance Lease, Liability, Current	39,619
Leases Total Current Liability	48,203
Operating Lease, Liability, Noncurrent	55,106
Finance Lease, Liability, Noncurrent	154,339
Leases Total NonCurrent Liability	209,445
Leases, Total Liability	$ 257,648