Adoption of Accounting Standards Codification 842 - Undiscounted Cash Flows (Details) $ in Thousands	Sep. 28, 2019 USD ($)
Operating Leases
2019 (Excluding the nine months ended September 28, 2019)	$ 1,025
2020	4,129
2021	4,005
2022	3,610
2023	3,275
Thereafter	8,832
Total lease payments	24,876
Less imputed interest	4,805
Total	20,071
Finance Leases
2019 (Excluding the nine months ended September 28, 2019)	60
2020	242
2021	229
2022	92
2023	53
Thereafter	73
Total lease payments	749
Less imputed interest	84
Total	$ 665