Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Sep. 10, 2019
Leases
Operating lease cost	$ 17,731	$ 81,070
Short-term lease cost	2,667	2,484
Amortization of right-of-use assets	17,904	6,108
Interest on lease liabilities	5,813	1,181
Total finance lease cost	23,717	7,289
Total lease costs	44,115	$ 90,843
Operating lease assets	116,282		$ 144,330	$ 495,000
Lease expense	$ 67,000