Leases - Schedule of Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2019	Sep. 28, 2019
Finance lease cost, total	$ 6	$ 6
Operating costs, total	903	2,243
Total lease expense	909	2,249
Selling, General and Administrative Expenses [Member]
Finance lease cost, total	4	4
Operating costs, total	476	1,398
Interest Expense [Member]
Finance lease cost, total	2	2
Operating Costs [Member]
Operating costs, total	$ 427	$ 845