Leases - Disclosure Under Topic 840 (Details) $ in Thousands	Dec. 31, 2018 USD ($)
Operating Leases
2019	$ 39,457
2020	12,009
2021	3,513
2022	3,209
2023	3,234
Thereafter	7,680
Total lease payments	69,102
Less imputed interest	(4,300)
Total lease obligations	64,802
Less current obligations	(39,457)
Long-term lease obligations	25,345
Financing Leases
2019	1,240
2020	913
2021	534
2022	455
2023	0
Thereafter	0
Total lease payments	3,142
Less imputed interest	(130)
Total lease obligations	3,012
Less current obligations	(1,240)
Long-term lease obligations	$ 1,772

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