Leases - Lease Cost (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Operating lease costs	$ 57,517
Variable lease costs	17,143
Total lease costs	74,660
Property, Plant and Equipment
Lessee, Lease, Description [Line Items]
Operating lease costs	48,100
Total lease costs	$ 58,500