Leases Leases - Supplemental Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee, Lease, Description [Line Items]
Operating cash flows from operating leases	$ 25,272
Operating cash flows from finance leases	76
Financing cash flows from finance leases	306	$ 0	$ 0
Operating leases	17,078
Finance leases	$ 7,434
Operating leases	5 years 1 month 6 days
Finance leases	6 years 8 months 12 days
Operating leases	3.60%
Finance leases	2.80%