Property, Plant and Equipment - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation	$ 3,688	$ 2,579
Interest costs capitalized		4,400
Construction in progress
Property, Plant and Equipment [Line Items]
Payroll	$ 1,200	$ 1,800