Leases - Lease Maturities (Details) $ in Thousands	Dec. 31, 2019 USD ($)
Operating leases
2019	$ 65,408
2020	36,386
2021	16,240
2022	8,792
2023	7,750
Thereafter	5,063
Total lease payments	139,639
Less imputed interest	(9,246)
Total lease obligations	130,393
Less: Current obligations	(61,198)
Long-term lease obligations	69,195
Finance leases
2019	2,234
2020	1,176
2021	184
2022	13
2023	0
Thereafter	0
Total lease payments	3,607
Less imputed interest	(186)
Total lease obligations	3,421
Less: Current obligations	(2,101)
Long-term lease obligations	$ 1,320