Stock Plans - Additional Information (Detail) - Performance-based stock unit - shares |
1 Months Ended | 6 Months Ended | 12 Months Ended | |||
---|---|---|---|---|---|---|
Jul. 31, 2017 |
May 31, 2017 |
Jun. 29, 2019 |
Dec. 29, 2018 |
Dec. 30, 2017 |
Dec. 31, 2016 |
|
Share Based Compensation Arrangement By Share Based Payment Award [Line Items] | ||||||
Other than options, granted | 47,900 | 98,500 | 275,800 | 81,300 | 289,900 | |
Performance period (years) | 3 years | |||||
Net debt to EBITDA ratio | 450.00% | |||||
Debt ratio achievement percentage | 166.67% |