Leases - Maturities of Lease Liabilities (Details) $ in Thousands |
Sep. 27, 2019
USD ($)
|
|---|---|
| Leases [Abstract] | |
| 2019 (excluding the nine months ended September 27, 2019) | $ 3,832 |
| 2020 | 6,445 |
| 2021 | 3,315 |
| 2022 | 2,589 |
| 2023 | 1,426 |
| 2024 and beyond | 4,537 |
| Total lease payments | 22,144 |
| Less: Imputed interest | 3,059 |
| Total operating lease liabilities | $ 19,085 |