Leases - Maturities of Lease Liabilities (Details) $ in Thousands	Mar. 31, 2019 USD ($)
Operating Leases
2019	$ 12,139
2020	16,186
2021	16,058
2022	15,111
2023	15,158
Thereafter	1,418,839
Total lease payments	1,493,491
Less: Imputed interest	(1,146,378)
Total present value of lease liabilities	347,113
Finance Leases
2019	5,726
2020	7,444
2021	7,093
2022	6,454
2023	67,593
Thereafter	0
Total lease payments	94,310
Less: Imputed interest	(14,784)
Total present value of lease liabilities	$ 79,526