Asbestos Litigation (Details 1) - USD ($) $ in Thousands |
Sep. 28, 2018 |
Dec. 31, 2017 |
|||||||
|---|---|---|---|---|---|---|---|---|---|
| Commitments and Contingencies Disclosure [Abstract] | |||||||||
| Long-term asbestos insurance asset | [1] | $ 269,268 | $ 284,454 | ||||||
| Long-term asbestos insurance receivable | [1] | 77,837 | 73,489 | ||||||
| Accrued asbestos liability | [2] | 54,580 | 50,311 | ||||||
| Long-term asbestos liability | [3] | $ 288,689 | $ 310,326 | ||||||
| |||||||||