Derivative Instruments - Offsetting Assets (Detail) - USD ($) $ in Thousands |
Apr. 01, 2018 |
Dec. 31, 2017 |
|---|---|---|
| Derivative Instruments and Hedging Activities Disclosure [Abstract] | ||
| Gross amounts of recognized assets | $ 4 | $ 16 |
| Gross amounts offset | 0 | 0 |
| Net amount of assets presented | 4 | 16 |
| Gross amounts of recognized liabilities | 18 | 13 |
| Gross amounts offset | 0 | 0 |
| Net amount of liabilities presented | $ 18 | $ 13 |