Adoption of Accounting Standards Codification 842 - Undiscounted Cash Flows (Details) $ in Thousands	Jun. 29, 2019 USD ($)
Operating Leases
2019 (Excluding the six months ended June 29, 2019)	$ 2,051
2020	4,096
2021	3,815
2022	3,479
2023	3,101
Thereafter	7,303
Total lease payments	23,845
Less imputed interest	5,137
Total	18,708
Finance Leases
2019 (Excluding the six months ended June 29, 2019)	118
2020	229
2021	168
2022	53
2023	37
Thereafter	56
Total lease payments	661
Less imputed interest	91
Total	$ 570