Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 30, 2019	Sep. 30, 2019
Lessee, Lease, Description [Line Items]
Lease expense	$ 2,440	$ 7,240
Cost of goods sold
Lessee, Lease, Description [Line Items]
Lease expense	1,538	4,529
Selling, general and administrative
Lessee, Lease, Description [Line Items]
Lease expense	$ 902	$ 2,711