Leases Lease Liability Maturity Schedule (Details) - USD ($) $ in Thousands		Mar. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating Leases
April 1, 2019 - December 31, 2019		$ 7,317
2020		17,488
2021		25,403
2022		11,376
2023		9,084
Thereafter		567,232
Total lease payments		637,900
Less: interest portion		(438,247)
Present value of lease payments		199,653	$ 199,300	$ 0
Finance Leases
April 1, 2019 - december 31, 2019		4,401
2020	[1]	122,070
2021		2,130
2022		1,121
2023		944
Thereafter	[1]	73,241
Total lease payments		203,907
Interest portion		(30,784)
Present value of expected net lease payments		173,123		$ 0
Lessee, Finance Lease, Option to Extend, Reasonably Certain 2024		38,700
Lessee, Finance Lease, Option to Extend, Reasonably Certain 2020		$ 119,800

[1] (1)Finance lease payments in 2020 and 2024 include approximately $119.8 million and $38.7 million, respectively, related to purchase options that the Company is reasonably certain that it will exercise.