Leases - Operating and Finance Lease Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Feb. 01, 2019	Jan. 01, 2019	Dec. 31, 2018
Operating
2019	$ 29,036
2020	107,362
2021	89,194
2022	75,923
2023	70,194
2024 and thereafter	172,200
Total lease payments	543,909
Less imputed interest	88,877
Total operating lease liabilities	455,032	$ 15,600	$ 433,400
Less current obligations	99,622			$ 0
Noncurrent operating lease liabilities	355,410			$ 0
Finance
2019	500
2020	1,945
2021	1,123
2022	859
2023	895
2024 and thereafter	2,772
Total lease payments	8,094
Less imputed interest	1,502
Finance Lease, Liability	6,592
Less current obligations	1,663
Long-term lease obligations	$ 4,929