Leases - Schedule of maturities of lease liabilities (Details) $ in Thousands	Sep. 28, 2019 USD ($)
Operating Leases
2019	$ 3,257
2020	11,742
2021	10,079
2022	7,325
2023	5,934
Thereafter	9,965
Total lease payments	48,302
Less: Interest	4,753
Present value of lease liabilities	43,549
Present value of lease liabilities	2,676
Finance Leases
2019	234
2020	975
2021	874
2022	611
2023	353
Thereafter	103
Total lease payments	3,150
Less: Interest	$ 474