Leases Leases Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Assets:
Operating	$ 861,878	$ 0
Finance	54,084
Total leased assets	915,962
Current
Operating	91,558	0
Finance	4,940
Non-current
Operating	792,358	$ 0
Finance	53,313
Total lease liabilities	$ 942,169