Adoption of Accounting Standards Codification 842 - Undiscounted Cash Flows (Details) $ in Thousands	Mar. 30, 2019 USD ($)
Operating Leases
2019 (Excluding the three months ended March 30, 2019)	$ 3,750
2020	3,708
2021	3,667
2022	3,294
2023	2,908
Thereafter	7,919
Total lease payments	25,246
Less imputed interest	5,211
Total	20,035
Finance Leases
2019 (Excluding the three months ended March 30, 2019)	236
2020	233
2021	203
2022	61
2023	45
Thereafter	60
Total lease payments	838
Less imputed interest	102
Total	$ 736