Revenue - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Accounting Policies [Line Items]
Description of revenue timing	Substantially all of the Company's customer contracts are for a duration of less than one year and individual customer purchase orders for contractual customers are fulfilled within one year of the purchase order date.
Warehouse Processing and Delivery Expense	$ 18,036	$ 20,277
Maximum
Accounting Policies [Line Items]
Percentage sales revenue not recognized at shipment (less than)	1.00%	1.00%
Shipping and Handling
Accounting Policies [Line Items]
Warehouse Processing and Delivery Expense	$ 5,607	$ 6,136