Leases - Maturities of Operating and Financing Lease Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Finance Leases
Remainder of 2019	$ 16,172
2020	89,159
2021	87,525
2022	85,177
2023	84,253
Thereafter	513,206
Total lease payments	875,492
Less: amount representing interest	(296,868)
Present value of lease liabilities	578,624	$ 596,638
Operating Leases
Remainder of 2019	2,299
2020	11,033
2021	9,372
2022	8,994
2023	8,920
Thereafter	47,405
Total lease payments	88,023
Less: amount representing interest	(16,846)
Present value of lease liabilities	71,177
Total
Remainder of 2019	18,471
2020	100,192
2021	96,897
2022	94,171
2023	93,173
Thereafter	560,611
Total lease payments	963,515
Less: amount representing interest	(313,714)
Present value of lease liabilities	$ 649,801