Leases - Other Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Cash Flow, Lessee [Abstract]
Operating cash flows from finance leases	$ 52,701
Operating cash flows from operating leases	101,875
Financing cash flows from finance leases	43,112
Right-of-use assets obtained in exchange for lease obligations
Finance leases	2,597
Operating leases	$ 77,905
Weighted-average remaining lease term - finance leases	14 years
Weighted-average remaining lease term - operating leases	13 years
Weighted-average discount rate - finance leases	10.00%
Weighted-average discount rate - operating leases	4.00%
Held for sale [Member]
Long Lived Assets Held-for-sale [Line Items]
Financing lease right-of-use assets	$ 36,900
Operating lease right-of-use assets	$ 9,600