Leases - Summary of Components of Lease Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Lessee Lease Description [Line Items]
Total lease cost	$ 3,485	$ 3,312	$ 3,198
Cost of Sales [Member]
Lessee Lease Description [Line Items]
Total lease cost	1,744	1,696	1,718
SG&A [Member]
Lessee Lease Description [Line Items]
Total lease cost	$ 1,741	$ 1,616	$ 1,480