Leases - Components of Lease Expense (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
	Sep. 28, 2019	Sep. 28, 2019
Leases [Abstract]
Operating Lease Cost	$ 1,390	$ 4,141
Short-Term Lease Cost	178	542
Finance Lease Cost:
ROU asset amortization	309	907
Interest on lease liabilities	25	69
Total Finance Lease Cost	334	976
Total Lease Costs	$ 1,902	$ 5,659