Leases Components of Lease Expense (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Operating Lease, Right-of-Use Asset	$ 31,994	$ 45,381
Finance Lease, Right-of-Use Asset	$ 962	$ 2,188
Operating Lease, Liability, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilities	us-gaap:OtherLiabilities
Present value of lease payments	$ 36,425	$ 49,292
Finance Lease, Liability	$ 1,128	$ 2,209