Property, Plant and Equipment - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 8,106,000	$ 4,921,000	$ 3,181,000
Assets held-for-sale	2,600,000	1,000,000.0
Cost of Goods Sold
Property, Plant and Equipment [Line Items]
Depreciation and amortization	5,700,000	3,700,000	2,900,000
Research and Development Expense
Property, Plant and Equipment [Line Items]
Depreciation and amortization	2,400,000	1,200,000	300,000
SG&A Expense
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 71,000	$ 13,000	$ 0