Leases Operating lease costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Operating Lease Right-of-use Asset, Amortization	$ 25,186	$ 0	$ 0
Real Estate [Member]
Lessee, Lease, Description [Line Items]
Operating Lease Right-of-use Asset, Amortization	23,308
Operating Lease, Interest Expense	15,815
Equipment [Member]
Lessee, Lease, Description [Line Items]
Operating Lease Right-of-use Asset, Amortization	1,878
Operating Lease, Interest Expense	$ 227