Leases Operating and Capital Leases (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Capital Leases
2019	$ 8,248
2020	7,582
2021	6,706
2022	0
2023	0
Thereafter	0
Total minimum lease payments	22,536
Less amount representing interest (3.87% – 7.36%)	2,240
Present value of minimum lease payments	20,296
Less amount due in one year	6,997	$ 6,848
Total long-term capital lease obligation	13,299	20,347
Operating Leases
Less than 1 year	70,590
2020	69,169
2021	59,236
2022	19,212
2023	5,453
Thereafter	36,256
Total Operating Lease Obligations	259,916
Operating leases, rent expense	$ 21,441	$ 16,797	$ 20,772
Capital Lease Obligations | Minimum
Capital Leases
Capital leases, interest rate on minimum lease payments	3.87%
Capital Lease Obligations | Maximum
Capital Leases
Capital leases, interest rate on minimum lease payments	7.36%